#include <linux/moduleparam.h>
#include <linux/libata.h>
#include <linux/hdreg.h>
+#include <linux/reboot.h>
#include <linux/stringify.h>
#include <asm/io.h>
#include <asm/irq.h>
static int ipr_testmode = 0;
static unsigned int ipr_fastfail = 0;
static unsigned int ipr_transop_timeout = 0;
-static unsigned int ipr_enable_cache = 1;
static unsigned int ipr_debug = 0;
static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS;
static unsigned int ipr_dual_ioa_raid = 1;
MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
-module_param_named(enable_cache, ipr_enable_cache, int, 0);
-MODULE_PARM_DESC(enable_cache, "Enable adapter's non-volatile write cache (default: 1)");
module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
};
#endif
-static const struct {
- enum ipr_cache_state state;
- char *name;
-} cache_state [] = {
- { CACHE_NONE, "none" },
- { CACHE_DISABLED, "disabled" },
- { CACHE_ENABLED, "enabled" }
-};
-
-/**
- * ipr_show_write_caching - Show the write caching attribute
- * @dev: device struct
- * @buf: buffer
- *
- * Return value:
- * number of bytes printed to buffer
- **/
-static ssize_t ipr_show_write_caching(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct Scsi_Host *shost = class_to_shost(dev);
- struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
- unsigned long lock_flags = 0;
- int i, len = 0;
-
- spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
- for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
- if (cache_state[i].state == ioa_cfg->cache_state) {
- len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name);
- break;
- }
- }
- spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
- return len;
-}
-
-
-/**
- * ipr_store_write_caching - Enable/disable adapter write cache
- * @dev: device struct
- * @buf: buffer
- * @count: buffer size
- *
- * This function will enable/disable adapter write cache.
- *
- * Return value:
- * count on success / other on failure
- **/
-static ssize_t ipr_store_write_caching(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct Scsi_Host *shost = class_to_shost(dev);
- struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
- unsigned long lock_flags = 0;
- enum ipr_cache_state new_state = CACHE_INVALID;
- int i;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
- if (ioa_cfg->cache_state == CACHE_NONE)
- return -EINVAL;
-
- for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
- if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) {
- new_state = cache_state[i].state;
- break;
- }
- }
-
- if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED)
- return -EINVAL;
-
- spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
- if (ioa_cfg->cache_state == new_state) {
- spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
- return count;
- }
-
- ioa_cfg->cache_state = new_state;
- dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n",
- new_state == CACHE_ENABLED ? "Enabling" : "Disabling");
- if (!ioa_cfg->in_reset_reload)
- ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
- spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
- wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
-
- return count;
-}
-
-static struct device_attribute ipr_ioa_cache_attr = {
- .attr = {
- .name = "write_cache",
- .mode = S_IRUGO | S_IWUSR,
- },
- .show = ipr_show_write_caching,
- .store = ipr_store_write_caching
-};
-
/**
* ipr_show_fw_version - Show the firmware version
* @dev: class device struct
&ipr_ioa_state_attr,
&ipr_ioa_reset_attr,
&ipr_update_fw_attr,
- &ipr_ioa_cache_attr,
NULL,
};
return IPR_RC_JOB_CONTINUE;
}
-/**
- * ipr_setup_write_cache - Disable write cache if needed
- * @ipr_cmd: ipr command struct
- *
- * This function sets up adapters write cache to desired setting
- *
- * Return value:
- * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
- **/
-static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd)
-{
- struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
-
- ipr_cmd->job_step = ipr_set_supported_devs;
- ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
- struct ipr_resource_entry, queue);
-
- if (ioa_cfg->cache_state != CACHE_DISABLED)
- return IPR_RC_JOB_CONTINUE;
-
- ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
- ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
- ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
- ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
-
- ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
-
- return IPR_RC_JOB_RETURN;
-}
-
/**
* ipr_get_mode_page - Locate specified mode page
* @mode_pages: mode page buffer
ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
length);
- ipr_cmd->job_step = ipr_setup_write_cache;
+ ipr_cmd->job_step = ipr_set_supported_devs;
+ ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
+ struct ipr_resource_entry, queue);
ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
LEAVE;
**/
static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
{
+ struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
- ipr_cmd->job_step = ipr_setup_write_cache;
+ ipr_cmd->job_step = ipr_set_supported_devs;
+ ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
+ struct ipr_resource_entry, queue);
return IPR_RC_JOB_CONTINUE;
}
static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
{
struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
- struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
ENTER;
- if (!ipr_inquiry_page_supported(page0, 1))
- ioa_cfg->cache_state = CACHE_NONE;
-
ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
ipr_ioafp_inquiry(ipr_cmd, 1, 3,
init_waitqueue_head(&ioa_cfg->reset_wait_q);
init_waitqueue_head(&ioa_cfg->msi_wait_q);
ioa_cfg->sdt_state = INACTIVE;
- if (ipr_enable_cache)
- ioa_cfg->cache_state = CACHE_ENABLED;
- else
- ioa_cfg->cache_state = CACHE_DISABLED;
ipr_initialize_bus_attr(ioa_cfg);
ioa_cfg->max_devs_supported = ipr_max_devs;
.err_handler = &ipr_err_handler,
};
+/**
+ * ipr_halt_done - Shutdown prepare completion
+ *
+ * Return value:
+ * none
+ **/
+static void ipr_halt_done(struct ipr_cmnd *ipr_cmd)
+{
+ struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
+
+ list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
+}
+
+/**
+ * ipr_halt - Issue shutdown prepare to all adapters
+ *
+ * Return value:
+ * NOTIFY_OK on success / NOTIFY_DONE on failure
+ **/
+static int ipr_halt(struct notifier_block *nb, ulong event, void *buf)
+{
+ struct ipr_cmnd *ipr_cmd;
+ struct ipr_ioa_cfg *ioa_cfg;
+ unsigned long flags = 0;
+
+ if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
+ return NOTIFY_DONE;
+
+ spin_lock(&ipr_driver_lock);
+
+ list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) {
+ spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
+ if (!ioa_cfg->allow_cmds) {
+ spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
+ continue;
+ }
+
+ ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
+ ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
+ ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
+ ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
+ ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
+
+ ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
+ spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
+ }
+ spin_unlock(&ipr_driver_lock);
+
+ return NOTIFY_OK;
+}
+
+static struct notifier_block ipr_notifier = {
+ ipr_halt, NULL, 0
+};
+
/**
* ipr_init - Module entry point
*
ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
+ register_reboot_notifier(&ipr_notifier);
return pci_register_driver(&ipr_driver);
}
**/
static void __exit ipr_exit(void)
{
+ unregister_reboot_notifier(&ipr_notifier);
pci_unregister_driver(&ipr_driver);
}
projects / users / jedix / linux-maple.git / commitdiff